I received the #6-24147 version a couple of days ago, from an Ebay seller. It is a bit disappointing as far as operation is concerned. It had some issues that the seller made good on however.
There is no sound other than the faint sound of the can motor. It relies on an O ring used as a drive belt to move the belt. An extra O ring was in the box. To make the saw blade move, requires two belts, not included in the accessory. I temporarily fitted two rubber bands to the two sets of pulleys and the blade turns sporadically. The wiring for the red strobe lights fouled on the drive mechanism.
I think I may stick with the 2301 version that I was going to sell and use the newer one for, I'm not sure what, at this point.